SDK LrApplication.addDevelopPresetForPlugin adjusts the White balance settings although not in preset

Forum|Forum|2 days ago
January 30, 2026
3 replies
7 views

When calling the LrApplication.addDevelopPresetForPlugin with the settings below, which don't include any white balance settings, the temp is adjusted to 2000 and Tint to 150.

local photoPresetTable = {
	Exposure2012 = -0.43,
	Whites2012 = 2
}

Full code example

local LrDialogs = import 'LrDialogs'
local LrTasks = import 'LrTasks'
local LrFunctionContext = import 'LrFunctionContext'
local LrApplication = import 'LrApplication'
local LrFileUtils = import 'LrFileUtils'

LrFunctionContext.postAsyncTaskWithContext("Test apply preset", function(context)
	LrDialogs.attachErrorDialogToFunctionContext(context)

	local catalog = LrApplication.activeCatalog()
	local activePhoto = catalog:getTargetPhoto()

	--	Create preset
	local photoPresetTable = {
		Exposure2012 = -0.43,
		Whites2012 = 2
	}
	local newPhotoPreset = LrApplication.addDevelopPresetForPlugin(_PLUGIN, "Test preset", photoPresetTable)

	--	Apply preset
	catalog:withWriteAccessDo("Apply preset", function()
		activePhoto:applyDevelopPreset(newPhotoPreset, _PLUGIN)
	end)
end)

Any suggestions or is this a bug?

This is the image I get:
https://github.com/user-attachments/assets/27d3f41a-8297-4299-ac1b-0b00b1f12ff6

System info

Lightroom Classic version: 15.0.1 [ 202511041508-dddee541 ]
License: Creative Cloud
Language setting: en
Operating system: Windows 10 - Business Edition
Version: 10.0.19045
Application architecture: x64
System architecture: x64
Logical processor count: 20
Processor speed: 2,1GHz
SqLite Version: 3.36.0
Adobe GSDK Version: 1.4.0.171

windows

johnrellis

Legend

Smart previews are implemented as lossy DNGs. Maybe run the test on a lossy DNG in the catalog to see if it also happens with that?

johnrellis

Legend

When I run that script, I don’t see the misbehavior in LR 15.1 (you’re on 15.0.1). Perhaps it is dependent on the particular photo?

I get a 404 when I click on the Github link. Perhaps you could upload a problem photo to Wetransfer, Dropbox, Google Drive or similar free service and post the sharing link here.

L

LightroomStatisticsAuthor

Inspiring

The strange thing is that on a different laptop on Windows 11 I could reproduce it once and after that the same image was Ok.

However on my Windows 10 computer (I know I have to upgrade) with Lightroom 15.01 and 15.1.1 I get the behavior each time, see Screen recording

Also I start looking into this after a customer of the Relative Adjustments plug-in created an issue with the same behavior, in that she created a preset with only exposure and white, but also th White balance settings where thrown off.

L

LightroomStatisticsAuthor

Inspiring

@LightroomStatistics More testing, it appears that the image I used was not found on the hard disk, but there as a smart preset.
The error occurs when the preset is applied to a smart preset.

However when the preset is applied on the original image, then everything is fine.